There are many characters in If The Emperor Had a Text-To-Speech Device. Here they are listed by affiliation; official canon characters are listed separately from characters original to TTS.
Imperium of Man
High Lords of Terra
- Ecclesiarch Decius XXIII
- Fabricator-General of Mars
- Grand Provost Marshal
- Master of the Administratum
- Commander Militant of the Imperial Guard
Loyalist Primarchs
- Rogal Dorn
- Roboute Guilliman
- Vulkan
- Corvus Corax
- Lion El'Jonson
- Jaghatai Khan
- Leman Russ
- Ferrus Manus
- Sanguinius
Space Marines
- Marneus Calgar
- Cato Sicarius
- Uriel Ventris
- Illiyan Nastase
- Tu'Shan
- He'Stan
- Azrael
- Asmodai
- Belial
- Chaplain Grimaldus
- Kaldor Draigo
- Kayvaan Shrike
- Kadus
- Helbrecht
- Indrick Boreale
- Apollo Diomedes
Adeptus Mechanicus
Imperial Guard
- Ollanius Pius
- Sly Marbo
- Colonel 'Iron Hand' Straken
- Gunnery Sergeant ‘Stonetooth’ Harker
- Mogul Kamir
- Ciaphas Cain
Sisters of Battle
Inquisition
Chaos
Chaos Gods
Traitor Primarchs
Chaos Champions
- Abaddon the Despoiler
- Ahzek Ahriman
- Lucius the Eternal
- Kharn the Betrayer
- Typhus
- Fabius Bile
- Cypher
- Miriael Sabathiel
Daemons
Other Chaos Followers
Other Characters
Eldar Gods
Eldar
- Eldrad Ulthran
- Yvraine
Dark Eldar
- Vraesque Malidrach
- Asdrubael Vect
- Kruellagh the Vile
- Lady Malys
- Tahril
Harlequins
Orks
Tau
Necrons
Tyranids
Others
Original TTS Characters
Adeptus Custodes
Inquisition
- Grand Master Elirush
- Inquisitor Donklas
- Inquisitor Adrielle Quist
- Inquisitor Javerticus
- Inquisitor Headsmash
- Calato
- Wilford
- Tempestus Scions
Adeptus Sororitas
Adeptus Mechanicus
Imperial Citizens
- Boy
- Hobo Guardsman
- Little Billy
- Detective Bruce Norring
- Snurko
- Crazy Hassan
- Astropath Sassafras
- Abducted Chronicler
- King of Khanasan
- Starass